$a^4+a$
$\frac{12x^2-7x-10}{3x+2}$
$\sin=\cos\left(90-a\right)$
$5y+2+6x+3y$
$\lim_{x\to\infty}\left(x-2\right)^{\frac{1}{2}}\cdot\left(x+1\right)^{\frac{2}{3}}$
$3x-4+2\left(x-5\right)=9x+8-2x$
$96\left(2k+y\right)=32\left(2k+y\right)$
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